
//
var daysms = 24 * 60 * 60 * 1000
var hoursms = 60 * 60 * 1000
var Secondms = 60 * 1000
var microsecond = 1000
var DifferHour = -1
var DifferMinute = -1
var DifferSecond = -1
function clock()
  {
      var time = new Date()
      var hour = time.getHours()
      var minute = time.getMinutes()
      var second = time.getSeconds()
      var timevalue = ""+((hour > 12) ? hour-12:hour)
      timevalue +=((minute < 10) ? ":0":":")+minute
      timevalue +=((second < 10) ? ":0":":")+second
      timevalue +=((hour >12 ) ? " PM":" AM")
      var convertHour = DifferHour
      var convertMinute = DifferMinute
      var convertSecond = DifferSecond
      var Diffms = (Tday.getTime())*1000 - time.getTime()
      DifferHour = Math.floor(Diffms / daysms)
      Diffms -= DifferHour * daysms
      DifferMinute = Math.floor(Diffms / hoursms)
      Diffms -= DifferMinute * hoursms
      DifferSecond = Math.floor(Diffms / Secondms)
      Diffms -= DifferSecond * Secondms
      var dSecs = Math.floor(Diffms / microsecond)

      if(convertHour != DifferHour) a="<font>"+DifferHour+"</font>天";
      if(convertMinute != DifferMinute) b="<font>"+DifferMinute+"</font>时";
      if(convertSecond != DifferSecond) c="<font>"+DifferSecond+"</font>分"
      d="<font>"+dSecs+"</font>秒"
      if (DifferHour>0) {a=a}
else {a=''}
document.getElementById("leftTime1").innerHTML = a + b + c + d; //显示倒计时信息

}
